Floor-surfacing machine.



A. E. JOHNSON. FLOOR SURFAGING MACHINE.-

APPLIOATION FILED JUNE 2, 1 908.

'7 Patented July 6,1909.

2 SHEETS-QUIET 1.

Fig. 2.

WITNESSES ATTORNEY A. E. JOHNSON. FLOOR SUBFACING MACHINE. APPLICATION nun mm: '2, 190a.

927,409. Patented July 6,1909.

2 SHEETS-SHEET 8.

INVENTOR WITNESSES w BX on Am v UNITED STATES ANDREW E. JOHNSON, OF PROVIDENCE, RHODE ISLAND.

FLOOR-SURFACING MACHINE.

Specification of Letters Patent.

Patented July 6, 1909.

Application filed June 2, 1908. Serial No. 436,315.

T all whom it may concern:

Be it known that I, ANDREW E. JOHNSON,

a citizen of the United States, residing at Providence, in the county of. Providence and v State of Rhode Island, have invented certain new and useful Improvements in Floor- Surfacing Machines, of which the following is a specification.

My invention relates to Improvements 1n floor-surfacing'machines, and it consists in the constructions, combinations and arrangements herein described and claimed.

The object of my invention is to provide a compact and efiicient floor-surfacing machine ada ted to dressa floor in a uniform and suite le mannerunder all conditions occurring in ractice.

A further 0 ject of my invention is to 1provide an im roved floor-surfacing mac line capable of eing readily and conveniently ad usted by the operator for meeting a conditions of work.

In the accompanying drawings, forming a part of this application and in which similar reference symbols indicate corresponding parts 1n the several views: Figure 1 1s a side elevation, illustrating one embodiment of my invention; Fig. 2 isa detail sectional view, illustrating means for ad usting the machine bed for elevating or depressing-the finishing rollers to control their action on the flooring; Fig. 3 is a detail elevation of the upper portion of the handle shown in Figs. 1 and 2; Fig. 4 is a lan view ofthe adjustable yoke shown in ig. 2. Fig. 5 is a lan view of the finishing rollers and their bed journa ed on the front axle 2, which latter has suitable truck wheels 3 rigidly secured on its ends. A rear axle 4 carries truck wheels 5, and is journaled at 6 in an adjustable yoke 7 provided with eyes S for Eivotally receiving the rod 9 carried by th A tubular handle 10 is shown threaded at 11 in a hollow boss 12 on the bedl the upper end of said handle carrying cross-bars 13 constituting convenient han grasps for the operator. A hurled hand disk 14 presses against the upper end of the handle 10 and is secured to a rod 15 extending from said v handle and through an elongated opening 16 in the yoke 7; the lower end of said rod 15 being threaded in a nut 17 seated in a recess 18 in the yoke 7. A coil s )ring 19 encircles the rod 15 and is confined etween the opposing faces of the boss 12 and yoke 7; thereby tending to yieldingly maintain the rear endof the. bed 1 in elevated position.

- The worm wheel 20 is rotatably mounted on the forward axle 2 inmesh with a worm l2)1don thestub shaft 22' journaled in the A clutch 23 splined on the axle 2 is shifted by a yoke 24 for locking and releasing the worm wheel 20 relative to said axle. The yoke 24 is secured to a rod 25 journaled in the bed 1, and carrying atits rear end a pedal 26 in convenient position for actuation y the operator for looking or releasing the worm wheel 20 relative to the axle 2.

The dressing rollers 27 are secured to a common shaft which is journaled at 28 in a bracket 29 secured to the forward'end of the bedl. A spindle 31, journaled in the bracket 29, carries the sprocket wheel 32 at its rear end and the bevel gear 33 at its for ward end in mesh with a corresponding bevel 34 on the roller shaft 30.

A hood 44 incloses the dressing rollers and is provided with a suitable discharge conduit 45 communicating with the casing 46 of a fan,

or other exhaust-device; the casing'46 beingprovided with a discharge ipe 47, to which can be attached a bag, or otlier receptacle, for receiving the detritus and dust from the finishing rollers.

Any suitable'motor and source of energy, such as an electric motor 48 and storage battery 49 with the usualcut-out switches, are shown seeured on the bed 1. The drive shaft 50 of said motor is' shown connected by a s rocket chain 51 to the wheel 32 for driving t e finishing roller, and by a belt 52 to the exhaust fan for actuating the latter. The driving shaft is further suitably connected as by a belt 53 with ulleys 54 on the stub shaft 22 for actuating the worm 21 on said shaft.

From the above description, it will be understood that my invention provides an efficient means by which the operator can instantly and conveniently adjust the hand disk 14 for regulating the pressure of the finishing rollers on the flooring and the extent tions occurring in practice, such as when travcling along a base board, the hood 44 can be uickly removed to permit close approach of t e dressing rollers thereto. I

I have illustrated and described a preferred and satisfactory construction, but, obviously, changes can be made in the scope of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters- Patent is:

1. In a floor-surfacing machine, the combination of a machine bed, a finishing roller carried by said bed, an axle journaled in said bed, bearings adjustably secured to said bed, an axle journaled in said bearings, and means for adjusting said bearings, substantially as described.

2. In a floor-surfacing machine, the combination of a machine bed, a finishing roller carried by said bed, an axle journaled in said bed, bearings adjustably secured to said bed, an axle journaled in said bearings, a tubular handle secured to said bed, and means extending through said handle for adjusting said bearings, substantially as described.

3. In a floor-surfacing machine, the combination of a machine bed, a finishing roller carried by said bed, an axle journaled in said bed, bearings adjustably secured to said bed, an axle journaled in said bearings, a spring confined between said bearings and bed, and

means confined between said bed and bearings, a handle secured to said bed, and adjusting means engaging said handle and threaded in said bearings, substantially as described.

-5. In a floor-surfacing machine, the combination of a machine bed, a finishing roller carried by said bed, a front axle journaled in said bed, bearings pivotally secured to said bed, a rear axle journaled in said bearings, means for adjusting said bearings, amotor carried by said bed, and clutch mechanism for operatively connecting said motor to said front axle and finishing roller, substantially as described."

6. In a floor-surfacing machine, the combination of a machine. bed, a finishing roller carried by said bed, an axle journaled in said bed, bearings ivotally secured to said bed, an axle journa ed in said bearings, a tubular handle secured to said bed, a rod extending through said tubular handle and threaded in said bearings, a hand disk secured to said rod in engagement with the top of said handle, and a spring encircling said rod in engagement with said bearing, substantially as described.

In testlmony whereof I aflix my s gnature 1n presence of two Witnesses.

ANDREW E. JOHNSON.

Witnessesi GUsTAvE A. EmxssoN; EMIL BERNSTROUR. 

